物理化学学报 >> 2010, Vol. 26 >> Issue (04): 827-832.doi: 10.3866/PKU.WHXB20100443

电化学 上一篇    下一篇

共压直接成型法制备单腔体固体氧化物燃料电池

宗卫正, 朱永法   

  1. 清华大学化学系, 北京 100084
  • 收稿日期:2009-12-14 修回日期:2010-03-03 发布日期:2010-04-02
  • 通讯作者: 朱永法 E-mail:zhuyf@mail.tsinghua.edu.cn

Preparation of Single-Chamber Solid Oxide Fuel Cell by Co-Pressing and Direct Forming Process

ZONG Wei-Zheng, ZHU Yong-Fa   

  1. Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
  • Received:2009-12-14 Revised:2010-03-03 Published:2010-04-02
  • Contact: ZHU Yong-Fa E-mail:zhuyf@mail.tsinghua.edu.cn

摘要:

采用共压直接成型法制备单腔体固体氧化物燃料电池(SC-SOFC), 单电池结构为Ni-YSZ/YSZ/LSM, YSZ为8%(x)Y2O3稳定的ZrO2, LSM为锰酸镧锶(La0.7Sr0.3MnO3). 应用扫描电子显微镜(SEM)研究了电池微观结构, 结果表明: 阴极和电解质之间结合紧密, LSM在阴极YSZ三维骨架上负载性能良好; YSZ电解质薄膜厚约50 μm, 阳极厚约600 μm, 阴极层厚约100 μm. 研究了单电池反应温度T, 阴极催化剂负载层数n, 甲烷和氧气混合体积比Rmix对电池输出性能的影响规律. 在T=800 ℃、n=2、Rmix=2时, 电池性能达到最佳, 开路电压为0.95 V, 最大电流密度为130 mA·cm-2, 最大功率密度为30 mW·cm-2.

关键词: 固体氧化物燃料电池, 共压直接成型法, YSZ三维骨架, 催化剂负载性能

Abstract:

Co-pressing and direct forming process has been developed for the preparation of a single-chamber solid oxide fuel cell (SC-SOFC), which consists of 8%(x) Y2O3-stabilized ZrO2 (YSZ) electrolyte, Ni-YSZ cermet anode and La0.7Sr0.3MnO3 (LSM) cathode. Scanning electron microscopy (SEM) showed tight integration between the cathode and electrolyte and good loading performance of LSMon the YSZ three-dimensional framework. The thickness of the YSZ electrolyte film, the anode and the cathode was about 50, 600 and 100 μm, respectively. The effects of temperature (T), number of catalyst loading layers (n) and the volume ratio of CH4 and O2 (Rmix=V(CH4)/V(O2)) on the SC-SOFC performance was studied. At T =800 C, n=2 and Rmix=2, the single cell performed the best, the open voltage was 0.95 V, the maximumcurrent density was 130 mA·cm-2 and the maximumpower density was 30 mW·cm-2.

Key words: Solid oxide fuel cell, Co-pressing and direct forming process, YSZ three-dimensional framework, Catalyst loading performance

MSC2000: 

  • O646